Official NHA Assessment

Race 4: GALLOP FORM MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Tipperary
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
5 / 13
Within 2 points
Significant Diffs
7 / 13
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Heavenly Mafia       2    56.5    1    0.00     0.0   78    65           65    -13
2    Thought Control      3    59.0    2    3.50     5.0   -     61           61    +61
3    Tipperary            3    60.0    3    3.75     5.0   63    63           63    +0
4    Baltic Assayer       2    60.0    4    5.45     0.0   56    72           72    +16
5    Roy's Blossom        4    60.0    5    8.55     3.0   66    66           66    +0
6    Sovereign Gem        3    59.0    6    8.60     5.0   -     60           60    +60
7    Annie's Song         3    60.0    7    8.90     5.0   68    62           62    -6
8    Lemon Thyme          3    60.0    8    10.80    5.0   64    62           62    -2
9    Ada Lovelace         2    59.0    9    13.80    0.0   70    70           70    +0
10   Princess Charmer     2    60.0    10   14.10    0.0   55    72           72    +17
11   Bookworm             2    59.0    11   24.70    0.0   -     70           70    +70
99   Hollywood Heiress    2    59.0    99   0.00     0.0   -     70           70    +0
99   Magical Spring       3    59.0    99   0.00     5.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heavenly Mafia 78 79 65 +14 0.0 -
2 Thought Control - 79 61 +18 5.0 -
3 Tipperary Line 63 64 63 +1 5.0
4 Baltic Assayer 56 53 72 -19 0.0 -
5 Roy's Blossom 66 54 66 -12 3.0 -
6 Sovereign Gem - 75 60 +15 5.0 -
7 Annie's Song 68 63 62 +1 5.0 -
8 Lemon Thyme 64 62 62 ✓ Match 5.0 -
9 Ada Lovelace 70 72 70 +2 0.0 -
10 Princess Charmer 55 50 72 -22 0.0 -
11 Bookworm - - 70 -70 0.0 -
99 Hollywood Heiress - 65 70 -5 0.0 -
99 Magical Spring - 62 60 +2 5.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points